The term "isogonal" has a few synonyms that can be used interchangeably in certain contexts. For instance, "isogonic" is a synonym for isogonal, indicating that both terms consist of the Greek root "gonia" for angle. Additionally, isogonal can also be replaced by "isogonal line" or "isogonally" to describe lines that are at equal angles or that are crossing at the same angle. Another synonym for isogonal is "isogon" that is used to describe a straight line that is symmetrically divided into two equal parts, each of which forms an equal angle with the line itself. Overall, these synonyms provide a variety of ways to describe geometric shapes that share similar properties.